Flue water heater



July 5, 1932, H GOLDHAGEN 1,865,852

FLUE WATER HEATER Filed May 29, .1930

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The' main object of this invention is to pro vide a device arranged in series yin an exhaust flue and provided with a water coil for the of utilizing the exhaust gases vv for Another object of this invention is to provide a iluewater heater for utilizing the exhaust gases for heating the contents of4 a coil, the device being constructed in such manner m that yany oii'ts prts 1inay be :readily removed e e. l

.The "above and other objects will become aracters 'of reference parte in the drawing.

Referring is a longitudinal sectional elevational view through the'device.

. Figur gg sho the means folded condition.

Figure 3 is a cross sectional view takenio'n Figure 4 is a crosssectional view taken on refer to like-named for securing the casing in Figure 5 is a fragmeiitaryy sectional eleva# tional view of the casing showing the latchinindisen agedposition. L l mlferring in etail to the drawing, the nu- Y 'n merals 10 and 11 indicate a pair of op tefcollars. Each of these col ars is' flange 12 at one end,`

ly osed p rgilfiqded with a face om one side of which an encircling rim 13 extends. A. pair of soft packing rings 14 are mounted on each of the rims and 'are used to form a smoke-proof fit between the casing hereinafter described and the rims 13.

The casing comprises a pair of longitudinal semi-circularl curved aprons 15 and 16. One of the longitudinally curved edges of each apron is rovi hinge sleeves which are interlocked by a hinge pin 17. The op osin longitudinal edges of the a ronsyare a apte to overlap each other, the e ge of apron 16 being olset over the edge of apron 15,l said oiset 18 forming an internal shoulder against which rests the longitudinal edge 19 of the apron 15. Intermediate the length of the edge 18 the latter is iiared to provide suiiicient area for the formalend opens on :pparent'in the description below in whichl ,coil isprovided with a i a ron.

brieay a the drawing'siguri:

e 2 is a "10P plan view of like.

ded with cooperating tion of an inclined bayonet slot 20 whose one jacent the edge 19 of the apron 15 a slot 21 the edge of the apron 16. Ad-

of like length is formed and extends parallel to the edge 19. These slots are superimposed one above the other and are ada ted to have slidably mounted therein a loc 'n pin 22. This locking pin 22 is anchored to a s 'de plate 23, which is movaby secured to the apron 15 in any desired manner. A helically wound coil 24 is mounted in the compartment 25 formed by the :folded aprons 15 and 16. This threaded inlet nipple 26 which rojects from the side of the closed e opposite end of the coil is provided with a delivery nipple 27 which is also rovided with threads so that the coils may secured to a source of water supply.

The device is adapted to be placed in se ries in a iue pipe line. The iue which has the dimensions of the collar 10 receivesv the latter and the' enlarged portions formed by 'the aprons 15 and 16 form a conduit and communicating channel with the flue for the purcondition, the rims 13 of the collars 10 have packing rings 14 mounted thereon, over which the aprons 15 and 16 are adapted to be folded in circular conformation, these aprons being located above'the rims 13 by having the locking' pin 22 engage in the inclined slot 20 farmed on the marginal edge 18 of the apron l It is to noted that certain changes in form and construction may be made without departing from the spirit and scope of the invention. f

Iclaim:

A device of the class described comprising a pair of complementary semi-cylindrical aprons forming a substantially cylindrical chamber having a pipe coil therein, said aprons being hinged to each other on one To retain the device in smoke-proof 

